3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array('a', 'b', 'c', 'd', 'e', 'f'); $str = implode(array_walk(function($v,&$k){if($k%3==0)$v.=';';}, array_reverse($arr))); echo $str;
based on nPYq8
Output for 5.3.0 - 5.4.32
Fatal error: Only variables can be passed by reference in /in/GbOhP on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/GbOhP on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/GbOhP on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/GbOhP on line 3
Process exited with code 255.